PROBLEM TO BE SOLVED: To provide a power supply controller for an electric vehicle, capable of activating the electric vehicle using power of a high voltage battery and capable of improving power efficiency and adjusting cell balance of the high voltage battery in generating power required for the activation.SOLUTION: This power supply controller comprises: a main switch unit (21) for connecting/disconnecting a high voltage battery (15) to/from a high voltage system (14); an activation detection unit (24) for detecting an activation command for an electric vehicle; a switch control unit (25) for switching the main switch unit (21) into a connection state on the basis of detection of the activation detection unit (24); and a cell switching control unit (25) for switching connection of a plurality of cells (15a) to make discharge current be output from a cell having high voltage. The activation detection unit (24) is configured to be operatable by receiving input of power based on the discharge current without using a low voltage battery (12).SELECTED DRAWING: Figure 1
【課題】高電圧バッテリの電力を利用して電動車両を起動でき、さらに、起動に必要な電力を生成する際に、電力効率の向上と高電圧バッテリのセルバランスの調整とを図ることのできる電動車両の電源制御装置を提供する。【解決手段】この電源制御装置は、高電圧バッテリ(15)と高電圧システム(14)とを断続する主スイッチ部(21)と、電動車両の起動指令を検知する起動検知部(24)と、起動検知部(24)の検知に基づいて主スイッチ部(21)を接続状態に切り替えるスイッチ制御部(25)と、複数のセル(15a)の接続を切り替えて電圧の高いセルから放電電流を出力させるセル切替制御部(25)とを備える。そして、起動検知部(24)は、低電圧バッテリ(12)を介さずに、前記放電電流に基づく電力を入力して動作可能な構成とした。【選択図】図1
POWER SUPPLY CONTROLLER FOR ELECTRIC VEHICLE
電動車両の電源制御装置
2018-03-01
Patent
Electronic Resource
Japanese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
European Patent Office | 2018
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